Mechanical Engineering - Workshop Technology

21.
The process used to improve fatigue resistance of the metal by setting up compressive stresses in its surface, is known as
hot piercing
extrusion
cold peening
cold heading
Answer: Option
Explanation:
No answer description is available. Let's discuss.

22.
Fin is a casting defect which is due to thin projections of metal not intended as a part of casting.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.

23.
The process of increasing the cross-section of a bar at the expense of its length, is called
drawing down
upsetting
spinning
peening
Answer: Option
Explanation:
No answer description is available. Let's discuss.

24.
In TIG arc welding, the welding zone is shielded by an atmosphere of
helium gas
argon gas
either (a) or (b)
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

25.
The metal extrusion process is generally used for producing
uniform solid sections
uniform hollow sections
uniform solid and hollow sections
varying solid and hollow sections
Answer: Option
Explanation:
No answer description is available. Let's discuss.